They have had a few graphics engine updates and many of the newer spell effects etc are much more detailed now.

A 260 would probably run the game with settings that looked like wow looked "back in the day" without issue but there are many more bells and whistles now.

Yes there are, however our Local News Poster here (Omega_Phoenix), runs it on Ultra on a 550TI TOP from ASUS with a X2 AM3 Chip to the current MoP expansion and he has no complaints on his 1080p setup. Frames are 50+ consistent.

I think perhaps there might be something (the insane amount of RAM for example) that is holding the OP's system back a bit,

-ST

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